'Castlevania': Why Is the Show Ending After 4 Seasons and Will There Be a Spinoff? On 5/13/21 at 6:53 AM EDT Castlevania's fourth and final season has now arrived on Netflix, bringing the epic vampire anime saga to an end. Though these final 10 episodes are expected to close the stories of characters like Trevor Belmont (Richard Armitage) and Alucard (James Callis), the creators of the show have been hinting that the world of Castlevania will continue in some form. Why is Two factors are at play when it comes to Castlevania coming to an end: Netflix's cancelation policies and the controversy around the series' creator Warren Ellis.